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2-(2-Thiazolylazo)-pcresol (TAC) as a reagent for the spectrophotometric determination of titanium (IV)

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Abstract

The reaction between titanium(IV) and 2-(2-thiazolylazo)-p-cresol-(TAC) in aqueous methanol media at apparent pH 4.0–5.6 results in a intensely coloured complex that is stable for at least 2 h. The combining ratio is 1 ∶ 1 cation ∶ TAC. Beer's law is obeyed up to 5.0 μg/ml titanium(IV) at 580 nm. The apparent molar absorptivity at 580 nm is 9.82.103 l.mole−1.cm−1 and the detection limit obtained was 5 ng/ml titanium (IV). A spectrophotometric method for the simultaneous determination of titanium and iron with TAC is proposed.

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Authors and Affiliations

  1. Instituto de Quimica, Universidade Federal da Bahia, 40210, Salvador, Bahia, Brasil

    Sérgio L. C. Ferreira & A. C. Spinola Costa

  2. Dept. de Quimica, Pontificia Universidade Católica, 22453, Rio de Janeiro, RJ, Brasil

    Henrique A. S. Andrade

Authors
  1. Sérgio L. C. Ferreira
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  2. A. C. Spinola Costa
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  3. Henrique A. S. Andrade
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Ferreira, S.L.C., Spinola Costa, A.C. & Andrade, H.A.S. 2-(2-Thiazolylazo)-pcresol (TAC) as a reagent for the spectrophotometric determination of titanium (IV). Mikrochim Acta 111, 119–125 (1993). https://doi.org/10.1007/BF01240174

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  • DOI: https://doi.org/10.1007/BF01240174

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